diff --git a/README.md b/README.md
index e566d7f721468f77fa88d10cbf3e05ea0bc216a0..5bf5242672ccdf522cc0c46aabb7e7cb315c2a2a 100644
--- a/README.md
+++ b/README.md
@@ -7,6 +7,8 @@ ppdo.owl is an ontology that extends skos model to store bbch phenological scale
 ppdo.rdf is the version of the ontology in RDF/XML format to use with skos play.
 
 ppdo_vide.owl is the entry file used during cellfie transformation rules in order to produce ppdo.owl.
+All the files used during the generation of ppdo.owl are stored in Cellfie directory.
+The algorithm is detailled in the wiki PhenologicalStages